WordNet

work as an intern; "The young doctor is interning at the Medical Center this year"
an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
deprive of freedom; "During WW II, Japanese were interned in camps in the West"
happening or arising or located within some limits or especially surface; "internal organs"; "internal mechanism of a toy"; "internal party maneuvering"
occurring within an institution or community; "intragroup squabbling within the corporation" (同)intragroup
located or occurring between the ribs; "intercostal muscles"
muscles between the ribs; they contract during inspiration (同)intercostal_muscle, musculus_intercostalis

PrepTutorEJDIC

(特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
『内側の』,内部にある / 『国内の』(domestic) / 内からとる,内用の
(胸部の)肋間(ろっかん)の

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/02 00:40:39」(JST)

wiki en

The internal intercostal muscles (intercostales interni) are a group of skeletal muscles located between the ribs. They are eleven in number on either side. They commence anteriorly at the sternum, in the interspaces between the cartilages of the true ribs, and at the anterior extremities of the cartilages of the false ribs, and extend backward as far as the angles of the ribs, whence they are continued to the vertebral column by thin aponeuroses, the posterior intercostal membranes.

Each arises from the ridge on the inner surface of a rib, as well as from the corresponding costal cartilage, and is inserted into the inferior border of the rib above. The internal intercostals are innervated by the intercostal nerve.^[1]

Their fibers are also directed obliquely, but pass in a direction opposite to those of the external intercostal muscles.

For the most part, they are muscles of exhalation. In exhalation the interosseous portions of the internal intercostal muscles, (the part of the muscle that is between the bone portion of the superior and inferior ribs), depresses and retracts the ribs, compressing the thoracic cavity and expelling air.^[2] The internal intercostals, however, are only used in forceful exhalation such as coughing or during exercise and not in relaxed breathing.^[3] The external intercostal muscles, and the intercartilaginous part of the internal intercostal muscles, (the part of the muscle that lies between the cartilage portion of the superior and inferior ribs), are used in inspiration, by aiding in elevating the ribs and expanding the thoracic cavity.^[4]

Additional images

Position of internal intercostal muscles (red). Animation.
Posterior surface of sternum and costal cartilages, showing Transversus thoracis. (Intercostalis internus visible at left.)
A central rib of the left side. Inferior aspect.
The Obliquus internus abdominis.
Diagram of the course and branches of a typical intercostal nerve.
Thoracic portion of the sympathetic trunk.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Seeley's Principles of Anatomy and Physiology by Philip Tate^{[page needed]}
^ Basic Human Anatomy - O'Rahilly, Müller, Carpenter & Swenson^{[page needed]}
^ Anatomy and Physiology: The Unity of Form and Function 5th Edition by Kenneth Saladin^{[page needed]}
^ http://www.yorku.ca/earmstro/journey/internal.html^{[full citation needed]}

External links

-254803891 at GPnotebook
Anatomy photo:18:03-0101 at the SUNY Downstate Medical Center - "The Internal Intercostal Muscle"
Anatomy figure: 18:03-03 at Human Anatomy Online, SUNY Downstate Medical Center - "Transverse section of thorax."

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Feasibility of intercostal blood flow measurement by echo-Doppler technique in healthy subjects.

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Clinical physiology and functional imaging.Clin Physiol Funct Imaging.2017 May;37(3):282-287. doi: 10.1111/cpf.12298. Epub 2015 Oct 2.
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Japanese Journal

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NAID 130005139624

左前胸部小切開にてオフポンプ3 枝MICS CABG を施行した1 治験例

日本冠疾患学会雑誌 21(1), 32-36, 2015
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Unexpected Massive Hemorrhage Following the Removal of a Pleural Drainage Tube

Internal
NAID 130005065262

★リンクテーブル★

リンク元	「内肋間筋」
関連記事	「internal」「intern」「intercostal」

「内肋間筋」

Internal intercostal muscles
	Internal intercostal muscles (red) seen from back.
Details
Latin	Musculi intercostales interni
Origin	Rib - inferior border
Insertion	Rib - superior border
Artery	Intercostal arteries
Nerve	Intercostal nerves
Actions	Hold ribs steady
Antagonist	External intercostal muscles
Identifiers
Gray's	p.403
Dorlands; /Elsevier	m_22/12549376
TA	A04.4.01.013
FMA	74085
	Anatomical terms of muscle